Processing data units for transfer over the same channel

Abstract

A radio communication scheme that newly defines a structure of a protocol data unit transmitted through a transport channel so as to avoid unnecessary redundant attachment of the terminal identifier (UE-ID) and the UE-ID type information. As only one terminal identifier (UE-ID) and UE-ID type exist in the header of protocol data unit being processed during one transmission time interval (TTI), the efficiency of overall data transmission is improved and waste of radio resources is remarkably reduced.

1 . A method of transmitting data in a wireless communication system, the method comprising;
 receiving a plurality of MAC (Medium Access Control) service data units from a first MAC sub-layer;   concatenating the plurality of MAC service data units;   adding a MAC header to the plurality of concatenated MAC service data units to produce a MAC protocol data unit, the MAC header comprising a channel identifier; and   transmitting the MAC protocol data unit to a lower layer through a transport channel in a TTI (Transmission Time Interval),   wherein the channel identifier identifies a logical channel which is located between a RLC (Radio Link Control) layer and a MAC layer having the first MAC sub-layer and a second MAC sub-layer, and the transport channel is located between the MAC layer and the lower layer,   wherein the first MAC sub-layer is a MAC-d sub-layer for a dedicated channel, and   wherein the second MAC sub-layer concatenates the plurality of MAC service data units received from the MAC-d sub-layer.   
   
   
       2 . The method of  claim 1 , wherein the channel identifier identifies a dedicated logical channel. 
   
   
       3 . The method of  claim 1 , wherein the plurality of MAC service data units equal to a plurality of MAC-d protocol data units. 
   
   
       4 . The method of  claim 1 , wherein the channel identifier identifies a type of the logical channel. 
   
   
       5 . The method of  claim 1 , wherein the transport channel is one of a paging channel (PCH), a downlink shared channel (DSCH), an uplink shared channel (USCH), a forward access channel (FACH), a common packet channel (CPCH) and a random access channel (RACH). 
   
   
       6 . The method of  claim 1 , wherein the second MAC sub-layer is for a common channel. 
   
   
       7 . The method of  claim 1 , wherein the plurality of MAC service data units have a same size. 
   
   
       8 . The method of  claim 1 , wherein the MAC protocol data unit is for an uplink. 
   
   
       9 . A terminal for transmitting data in a wireless communication system, the terminal comprising;
 a receiving module for receiving a plurality of MAC (Medium Access Control) service data units from a first MAC sub-layer;   a concatenating module for concatenating the plurality of MAC service data units;   a header module for adding a MAC header to the plurality of concatenated MAC service data units to produce a MAC protocol data unit, the MAC header comprising a channel identifier; and   a transmitting module for transmitting the MAC protocol data unit to a lower layer through a transport channel in a TTI (Transmission Time Interval),   wherein the channel identifier identifies a logical channel which is located between a RLC (Radio Link Control) layer and a MAC layer having the first MAC sub-layer and a second MAC sub-layer, and the transport channel is located between the MAC layer and the lower layer,   wherein the first MAC sub-layer is a MAC-d sub-layer for a dedicated channel, and   wherein the second MAC sub-layer concatenates the plurality of MAC service data units received from the MAC-d sub-layer.   
   
   
       10 . The terminal of  claim 9 , wherein the channel identifier identifies a dedicated logical channel. 
   
   
       11 . The terminal of  claim 9 , wherein the plurality of MAC service data units equal to a plurality of MAC-d protocol data units. 
   
   
       12 . The terminal of  claim 9 , wherein the channel identifier identifies a type of the logical channel. 
   
   
       13 . The terminal of  claim 9 , wherein the transport channel is one of a paging channel (PCH), a downlink shared channel (DSCH), an uplink shared channel (USCH), a forward access channel (FACH), a common packet channel (CPCH) and a random access channel (RACH). 
   
   
       14 . The terminal of  claim 9 , wherein the second MAC sub-layer is for a common channel. 
   
   
       15 . The terminal of  claim 9 , wherein the plurality of MAC service data units have a same size. 
   
   
       16 . The terminal of  claim 9 , wherein the MAC protocol data unit is for an uplink.